Control Appliance with Computer

This project contains its own hardware and software to control at most eight electric appliances via PC’s parallel port. This project is independently developed by me. You can ON/OFF an appliance with Function keys (F1, F2, F3….) or with the help of mouse. This means if you have connected a fan on switch-3 and a bulb on switch on Switch-2 and if you want to OFF the fan you can do it by simply pressing F3 key. Again if you want to ON it you can do it by again pressing F3 key, without affecting state of bulb.

2. Aim of project

Most of engineering industry using PC to control hardware with using additional I/O card but with my project you can use your default printer port controlling external device such as switching on/off light or control electronic devices. This project allows you to control appliance in your home or office like-turning on or off the air conditioner, adjusting lighting, opening &amp; closing windows, monitoring burglar alarms, and more.

3. Requirements

3.1 System: - A PC working on MS-DOS/WINDOWS 98/ME

3.2 Software:-A program written in C.

3.3 Hardware:-

This material is about the parallel port on MS-DOS / Windows computers.

Imagine you are looking at the back of your pc, and that the parallel port socket is horizontal, with the long row of socket on top. The numbers of the sockets at the ends of the rows are...

13 . . . . . . . . . . 1

25 . . . . . . 14

The 'interesting' pins are: Data bits 0-7: Pins 2 to 9, respectively. If you write to address 888 (decimal), you should see the outputs on those pins change. Pins 18-25: Signal ground. (i.e. for a very simple experiment, connect an LED to pin2, a 680ohm resistor to the LED, and then the other end of the LED to pin 19.

The PCB contains eight identical switched relay positions,

Power input positions to the relays (either [url removed, login to view] jack

4 pekerja bebas membida secara purata $78 untuk pekerjaan ini

i am company sales manager usa, we are outsourcing firm called matirp co-operation based in india. i can do this for real cheap like 90$ and can provide support too. but if you are still looking for a freelancer or outLagi